Mathematics, 23.02.2021 04:30 ilovepuppieslol4805
Melissa writes the following proof for the theorem: If the diagonals of a quadrilateral bisect each other, the quadrilateral is a paralelogram
Melissa's proof
1. For triangles AOB and COD, angle 1 is equal to angle 2, as they are vertical angles.
2. AO = OC and BO = OD because it is given that diagonals bisect each other.
3. The
are congruent by SAS postulate.
4. Similarly, triangles AOD and COB are congruent.
5. By CPCTC, AB is equal to DC.
6. By CPCTC, AD is equal to BC.
7. As the opposite sides are congruent, the quadrilateral ABCD is a parallelogram.
Which is the missing phrase in Melissa's proof?
O angles ADB and CBD
O angles AOB and COD
O triangles ADB and CBD
O triangles AOB and COD
Answers: 3
Mathematics, 21.06.2019 13:00
Do not comment if you aren’t going to . create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !
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Mathematics, 21.06.2019 20:20
How do the number line graphs of the solutions sets of -23 > x and x-23 differ?
Answers: 1
Melissa writes the following proof for the theorem: If the diagonals of a quadrilateral bisect each...
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